Based on the data obtained from the 1∶5 000 helicopter electromagnetic and magnetic comprehensive survey in 2004,in combination with ground coal geology as well as geophysical prospecting and remote sensing information,the authors studied the relationship between the aeroelectromagnetic or aeromagnetic characteristics and the distribution of underground coal fire in Wuda area,Inner Mongolia.

Our study on ground fire of this zone in 2002 shows that plenty of combusibles near surface and undergound is the substance preconditions of forest ground fire, and the weather conditions promote the occurrence of ground fire.